Rerun make xconfig(or any choice you like), check on the ext3 built-in support(that means not as a module), rebuild the kernel. Replace root=LABEL=/ with root=/dev/hda1(or what ever your root filesystem reside in) and comment the line initrd=***.img out in 2.6.0 section in your /etc/grub.conf(or lilo.conf).
Reboot. Good luck! If secceed, recover the line initrd=***.img